Seal-lock.



P V 0. m a 0 B PL H M W flu. 714,027.

(Application filed May 24, 1902.)

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WILLIAM H. PRESTON, OF VALLEY JUNCTION, WISCONSIN.

SEAL-LOCK.

SPECIFICATION forming part of Letters Patent No. 714,027, dated November 18, 1902.

Application filed May 24, 1902. Serial No. 108.337. (No model.)

To all whom, it may concern.-

Be it known that I,WILLIAM H. PRESTON, a citizen of the United States, residing at Valley Junction, in the county of Monroe and State of Wisconsin, have invented new and useful Improvements in Seal-Locks, of which the following is a specification.

My invention relates to looks; and the pri- 'mary object thereof is to produce a seal-lock of a new and improved character whereby a door may be secured in closed position to determine an unauthorized opening thereof.

A further object of the invention is to provide a new and improved seal to be used in connection with my improved lock which is designed to be cheap, durable, and efficient.

Still further objects of the invention will appear as the nature of the same is more fully understood from the following description, taken in connection with the accompanying drawings, which form a part of this specification.

The invention consists in the construction, combination, and arrangement of parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a fragmentary side elevation of a freight-car, illustrating the preferred application of my invention. Fig. 2 is a longitudinal sectional view of the device, the locking-bolt being in elevation. Fig. 3 is a sectional view on the line 3 3, Fig. 1, looking in the direction of the arrows, the locking-bolt being removed. Fig. 4 is a fragmentary detail view of the upper end of the locking-bolt. Fig. 5 is a similar view of the forward end of the hasp. Fig. 6 is a view in perspective of a seal-strap especially adapted for use in connection with a lock of my improved construction.

A designates a casing comprising a baseplate 1 and a housing 2, detachably secured to the base-plate.

The base-plate 1 is provided with perforations 3, through which pass screws or other fastening means 4: to secure the casing in applied position, which in this instance for the purpose of illustration and to demonstrate its applicability is secured to the sliding door of a freight-car. The base-plate is provided at a point adjacent its lower end with a seat or socket 5, adapted to receive a pin 6, carried by a hasp 7.

The hasp 7 may be of any preferred construction known to the art and has one end thereof provided with an opening through which passes a fastening device 8 to secure thehasp in applied position, and the pin 6 may be secured thereto in any manner found to be advantageous. The pin 6 when inserted into the seat or socket 5 holds the door in closed position, and in order to obviate any liability of the pin becoming disengaged from the seat or socket the same is held in engagement therewith throughthe medium of a locking-bolt ,9.

The housing 2 is provided with flanges 10, through which pass fastening devices to engage the base-plate to detachably secure the housing thereto and which when in applied position provides a longitudinally-arranged slot 11, having the upper wall thereof inclined and terminating in an opening, and the side walls of said slot are provided with oppositely-disposed longitudinally-arranged recesses 12, having their lower or outer ends terminating intermediate the ends of the slot 11. A retaining-guide 13 is secured to the base-plate near the lower end thereof and is in the form of a lug having forwardly-proj ecting flanges 14, having their ends inwardly and reversely bent to provide slots 15 and 16.

The locking-bolt 9 hasthe upper end thereof provided with laterally-projecting trunnions 17, adapted to be received by the recesses 12 to fulcrum and slidably mount the bolt within the casing, and the lower end of the bolt is adapted to fit in the slot 15 and is provided with laterally-projecting wings 18 to fit in the slot 16, which when within said slot prevent the bolt being turned upon its fulcrum, and the same may be withdrawn from the slot by moving the bolt'inward within the casing to permit the bolt being turned upon its fulcrum, whereby the pin is free to be withdrawnfrom theseat orsocket; The outer edge of the bolt is tapered to correspond to the inclination of the upper wall of the slot 12 to permit its being moved inward within the casing a sufficient distance to withdraw the guides 18 from the slot 16 and also to permit the guides being inserted in the slot. The inner edge of the bolt is reduced or cut away to compensate for the lug, whereby the bolt is provided with a smooth bearing-surface. I

The hasp is provided with hooks 19 to either side of the bolt 9, to which are secured the opposite ends of a strap-seal 20, provided with perforations 21 to receive the hooks 19. The seal when in applied position is adapted to embrace the inclined edge of the bolt 9,whereby through the virtue of the inclination prevent the same from being moved inward within the casing, consequently retaining the wings 18 in the slot to secure the bolt in locked position. The bolt 19 is prevented from gravitating through the medium of a dog 22, engaging one of a series of serrations 23. The dog 22 inay be in the form of a leafspring secured at one end to the inner face at the upper end of the boltin a manner that will give to its free end a spring quality, whereby it may freely ride over the serrations to permit the bolt being moved inward within the casing and to engage one of the serrations to prevent its gravitating, whereby the wings are retained within the slot 16 to secure the hasp in its locked engagement with the baseplate.

It may be found advantageous to use in connection with my improved look a seal of the common form, and in order to accomplish the utilization of such a seal I provide the forward end of the hasp with an eye 24, adapted to aline with an eye 26, carried by the retaining-guide, and through which may be passed the wire of the seal.

The operation of the device when the several elements constituting the lock are assembled and occupy the relative engaged positions as disclosed in Figs. 1 and 2 may be explained as follows: To release the hasp to unfasten the door, the bolt 9 is moved inward within the casing a distance sufficient to withdraw the wings from the slot 16, which permits the bolt being turned upon its fulcrum. The pin may be when the bolt is in this position moved from engagement with the seat or socket, leaving the door free to be opened. The seal must be broken before the bolt can be moved inward within the casing, thus rendering it impossible for an unauthorized opening of a door sealed with a lock of my improved construction to go unnoticed. To secure a door in closed position, the pin is inserted into the seat or socket, which will be retained therein by the bolt 9, and to return the bolt to its normal position the same is turned upon its fulcrum to withdraw the dog from in engagement with the set-ration, which permits the bolt to be withdrawn from the casing to the limit of the recesses 12, thereby placing the wings beneath the lug and in path of the slot 16. The bolt may remain in this position until the seal is properly applied, and then the bolt is moved inward to the limit of the slack of the sealand in which position it is held by the dog engaging one of the serrations. The dog is prevented from being disengaged from the serrations by the wings.

It is obvious from the above description, taken in connection with the accompanying drawings, that I provide a lock which will securely and efiectively seal a door in its closed position and one that is cheap, dura= ble, and efficient.

Having thus fully described the invention, what is claimed as new is 1. In a lock, the combination with a baseplate, of a hasp adapted to have engagement therewith, a bolt having a slidable and fulcrum connection with the base-plate, and provided with an inclined outer edge, means carried by the bolt to engage the base-plate to prevent the bolt gravitating, a seal adapted to embrace the inclined edge of the bolt to prevent its having a slidable movement, means for securing the seal in applied position and means for preventing the bolt being turned upon its fulcrum.

2. In a lock, the combination witha casing, of a hasp, a bolt slidably mounted and fulcrumed within the casing, means for preventing the bolt gravitating, hooks carried by the hasp, a seal secured to the hooks to embrace the bolt to prevent its being moved within the casing, and means for preventing the bolt being turned upon its fulcrum.

3. In a lock, the combination with a casing, of a hasp, a bolt slidably mounted within the casing and provided with an inclined outer edge, means for preventing the bolt gravitating, hooks carried by the hasp, and a seal secured to the hooks to embrace the inclined edge of the bolt to prevent its being moved within the casing.

4. In a lock, the combination with a casing, of a bolt slidably mounted within the casing and provided with an inclined outer edge, a seal adapted to embrace the inclined edge to prevent the bolt being moved Within the cas ing, and means for securing the seal in applied position.

5. In a lock, the combination with a casing, of a hasp, a bolt slidably mounted within the casing, means for preventing the bolt gravitating, hooks carried by the hasp, and a seal secured to the hooks to embrace the bolt.

6. In a lock the combination with a casing, of a hasp, a bolt slidably mounted and fulcrumed in the casing, and provided with an inclined outer edge, means for preventing the bolt gravitating, a retaining-guide provided with slots, wings carried by the bolt and adapted to fit in the slots, a seal adapted to embrace the inclined edge of the bolt to prevent its inward movement within the casing, and means for securing the seal in applied position.

7. In a lock, the combination with a casing provided with serrations and grooves, of a hasp, a retaining-guide provided with slots,

a bolt having the upper end thereof provided with trunnions, a dog carried by the bolt, and wings secured to, the bolt.

8. In a lock, the combination with a casing provided with serrations, grooves, and a seat,

of a hasp, a pin secured to the hasp and adapted to engage the seat, a retaining-guide provided with slots, a bolt having the upper end thereof provided with trunnions, a dog carried by the bolt, wings secured to the bolt, hooks carried by the hasp, and a seal adapted to be secured to the hooks to embrace the bolt.

9. In a lock, the combination with a baseplate provided with serrations and a seat, of a casing detachably secured thereto, and provided with aliningrecesses, a hasp, a pin secured to the hasp and adapted to occupy the seat, a bolt having an inclined outer edge, trunnions carried by the bolt and adapted to be received by the recesses to fulcrum and slid-ably mount the bolt within the casing, a

dog carried by the bolt and adapted to have engagement with the serrations, a guide provided with slots, wings secured to the bolt and adapted to fit in the slots, hooks carried by the hasp, and a seal secured to the hooks and adapted to embrace the inclined edge of the bolt.

WILLIAM H. PRESTON.

, Witnesses:

WM. ORAGO, A. L. WHITEAKER. 

